Electrically Assisted Supercharging Status Quo and Outlook
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Electrically assisted supercharging in internal combustion engines is gaining importance due to the spread of 48-V vehicle electrical systems as well as advances in battery technology and electric motors. In this article, BorgWarner describes two different concepts - the eBooster and the eTurbo -, identifies the main development challenges and explains in detail the differences and the optimum selection of electrically assisted charging systems.
A historical look back shows that electrically assisted supercharging was introduced as early as 1915, when electrically operated turbo compressors were installed in two-stroke diesel engines . Turbochargers have been used in series-production vehicles in the automotive industry since the 1960s, making it possible to reduce displacement and fuel consumption of the engines. However, downsizing turned the engine transient response into a challenge . For this reason, the idea of electrically assisted supercharging was...
The authors thank Rüdiger Allmang, Business Line Director eBooster at BorgWarner Turbo Systems, Kirchheimbolanden, for his support in the making of this technical article.